[#3865] External subcommands

This patch allows the puppet single-executable to invoke external,
hyphenated subcommands, much like how git does.

1 files changed, 14 insertions, 1 deletions

diff --git a/lib/puppet/util/command_line.rb b/lib/puppet/util/command_line.rb
index 8a010bb76..8c8eb91d5 100644
--- a/lib/puppet/util/command_line.rb
+++ b/lib/puppet/util/command_line.rb
@@ -51,10 +51,23 @@ module Puppet
                     require_application subcommand_name
                     Puppet::Application.find(subcommand_name).new(self).run
                 else
-                    abort "Error: Unknown command #{subcommand_name}.\n#{usage_message}"
+                    unless execute_external_subcommand
+                        abort "Error: Unknown command #{subcommand_name}.\n#{usage_message}"
+                    end
                 end
             end
 
+            def execute_external_subcommand
+                    external_command = "puppet-#{subcommand_name}"
+
+                    require 'puppet/util'
+                    path_to_subcommand = Puppet::Util.binary( external_command )
+                    return false unless path_to_subcommand
+
+                    system( path_to_subcommand, *args )
+                    true
+            end
+
             def legacy_executable_name
                 LegacyName[ subcommand_name ]
             end